Prefix overview
Phone numbers in prefix 443-276
This page covers the 443-276 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
443-276
RATE CENTER
COLUMBIA
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
MD
Prefix range
The prefix 443-276 includes numbers from 4432760000 to 4432769999.
This range is associated with the COLUMBIA rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers